2004 Volume 29 Issue 1 Pages 98_151-98_158
Gust loading factor (GLF) method has been adopted to wind loads on buildings in most domestic and international codes or standards. The GLF consist of static, background and resonance factor. In the traditional GLF method, the background and resonance components have simply same vertical distribution of static one. But obviously, the each distribution of the components is different from the others. In this paper, two investigation related to wind load distribution have been carried out.
Firstly, the equivalent static distribution of background component is proposed, which has agreement in shear force or over turning moment at any height of buildings. The distribution are derived by statistical approach, and verified by the wind tunnel test data. The other hand, distribution similar to static loads is inspected.
Secondarily, the contributions of high natural frequency components are investigated by response analysis of typical structural model. As the result, the equivalent resonance load considered all modes at the building top amount 1.4 times as much as that only considered first mode, typically.
